-
characteristic of
Gelisols. In the
World Reference Base for Soil
Resources (WRB), most
Gelisols belong to the Cryosols. In soil taxonomy,
Gelisols key out before...
- In
gelisols (permafrost soils),
cryoturbation (frost churning)
refers to the
mixing of
materials from
various horizons of the soil down to the bedrock...
-
material starting within 40 cm from the soil surface. In Soil Taxonomy,
Gelisols key out
before Histosols, and in WRB,
Histosols key out
before Cryosols...
- cold climate. The slow rate of
decomposition of
organic material means gelisols (permafrost soils) are very
important as a sink for
carbon dioxide. This...
-
quite recently been deposited, e.g. on
recent river alluvium. In the US,
Gelisols occur only in
parts of Alaska; they are
characterized by
having permafrost...
-
glaciated regions. The
dominant soil
orders are
podsols and,
further north,
gelisols.
Subarctic regions are
often characterized by
taiga forest vegetation as...
-
order by
surface area (16.3% of
global and 12.2% of U.S. ice-free land).
Gelisols:
Soils with
permafrost within 100 cm or
cryoturbation (frost churning)...
-
since the Silurian; however,
unlike other soil
orders (oxisol, ultisol,
gelisol, etc) they do not have
value as
indicators of climate.
Orthents may, in...
-
million years ago in the Neoproterozoic. However, in
these periods fossil gelisols are
generally abundant,
notable finds coming from the
Carboniferous in...
-
north where the
tundra dominates.
Soils are
mainly turbels (a type of
gelisol). The
active layer tends to be less than one
metre deep,
except near rivers...
